Mitsubishi TNMG160412-MS US735 | Roughing Stainless Steel Insert
Price shown is a starting point. Contact us for a precise quote based on your requirements.
TNMG160412-MS US735
Mitsubishi Materials | The Heavy-Duty Stainless Steel Specialist
The Mitsubishi TNMG160412-MS US735 is a high-toughness CVD coated carbide insert engineered for aggressive stainless steel turning. With its reinforced 1.2mm nose radius, it is specifically built to withstand massive thermal shocks and mechanical impacts. As a premier long-tail precision tool, the US735 grade combined with the MS chipbreaker provides industry-leading reliability during heavy interrupted CNC machining of austenitic alloys.
M-Class Heavy Roughing | Maximum Edge Strength | MS Medium-Light Breaker
Technical Code Breakdown
Triangular
0° Relief
Tolerance
Hole/Chip
16.5mm Edge
4.76mm Thick
1.2mm Rad
Light-Med Breaker
ISO (Metric) vs ANSI (Inch) Reference
| Feature | ISO (Metric) | ANSI Equivalent |
|---|---|---|
| Model ID | TNMG160412-MS | TNMG 333 MS |
| Inscribed Circle | 9.525 mm | 0.375" |
| Corner Radius | 1.2 mm | 0.047" |
US735 Tough-Grade Carbide
The US735 grade is Mitsubishi's dedicated indexable turning insert for difficult stainless steel. Its unique coating layer prevents chemical reactions between the tool and the workpiece, drastically reducing built-up edge (BUE). It is the "safety-first" grade for heavy roughing where tool breakage is not an option.
MS Low-Force Chipbreaker
The MS chipbreaker is optimized for medium-light cutting depth but excels in 1.2mm radius configurations. It features a sharp cutting edge that slices through gummy alloys, ensuring effective chip control and lowering the spindle load, which prevents vibration during deep passes.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed per Rev ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Austenitic Stainless (304/316) | 50 - 130 m/min | 0.15 - 0.40 mm/rev | 1.5 - 4.5 mm |
| Duplex Stainless Steel | 40 - 90 m/min | 0.15 - 0.35 mm/rev | 1.0 - 3.5 mm |
HEAVY-DUTY HOLDER PAIRING
Optimized for standard MTJNR/L or high-rigidity WTJNR/L turning tool holders (Size 16).
Shop Size 16 Holders →
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.